CN105022312A - Household electrical appliance metering and protective device, and washing machine with the device - Google Patents

Abstract

The invention relates to the field of household electrical appliances, in particular to a household electrical appliance metering and protection device and a washing machine having the same. The household appliance metering and protection device is connected to the power plug, including a controller, a line detection device and a power on/off control device respectively connected to the controller; the line detection device is used to collect the electrical information introduced by the power access terminal; The controller is used to judge and count the electrical information collected by the line detection device, and control the on-off state of the power on-off control device according to the judgment results, and then control the on-off state of the home appliance and the power access terminal. Therefore, the device can accurately judge the load characteristics of household appliances, has automatic on-off capability, realizes detection and protection of lines, avoids malfunctions, and has power consumption statistics capabilities.

Description

A household appliance metering and protection device and a washing machine having the same

technical field

The invention relates to the field of household electrical appliances, in particular to a household electrical appliance metering and protection device and a washing machine having the same.

Background technique

With the improvement of people's living standards, home appliances with different functions have gradually become an indispensable configuration in people's homes. While meeting the needs of daily use, the safety hazards brought by various home appliances have also increased. Operating and running in a humid environment, such as water heaters, washing machines, etc., may potentially cause electric shock to users. At the same time, in addition to using the basic functions of home appliances, people have increasingly strong demands for the convenience of using home appliances and controlling the operating status of home appliances. They hope that home appliances will become more intelligent and humanized. With the development of power measurement technology, circuit detection and protection technology and Internet of Things technology, these needs of users can be met. In order to meet the above-mentioned multiple needs of users and improve user satisfaction, the inventors of the present invention propose a metering and protection device for home appliances with a multi-function Internet of Things.

Most of the existing home appliance power plugs have no line safety detection and protection module, and users often use the method of connecting smart sockets in series to realize line detection and protection. For example, the invention patent with application number 201210366399.6 discloses a smart socket, including the socket body, It also includes an electric energy sensing module, a processor and a communication module arranged on the socket body, and the electric energy sensing module is used as a signal collection terminal of the smart socket to be connected with the electrical signal ends of the live line and the neutral line in the socket body, and the electric energy sensing module The signal output terminal of the module is connected with the signal input terminal of the processor, the communication signal terminal of the processor is connected with the communication module, and the communication module communicates with the controller of the remote control center. This method has a single function and cannot realize the linkage between the detection protection module and the home appliance itself. It is difficult for the smart socket to accurately judge the specific load characteristics of the home appliance, often causing malfunctions, and the external module is inconvenient to use and not beautiful.

Based on the above description, there is an urgent need for a household appliance metering and protection device to solve the problems of low safety and low convenience in the use of household appliances in the prior art.

Contents of the invention

In view of this, the object of the present invention is to provide a metering and protection device for household appliances, which can accurately judge the load characteristics of household appliances, has automatic on-off capability, realizes detection and protection of lines, and avoids malfunctions. At the same time, it has the power consumption statistics capability.

The object of the present invention is also to provide a washing machine, which has the above-mentioned metering and protection device for household appliances.

Embodiments of the present invention adopt the following technical solutions:

A metering and protection device for household appliances, which is connected to a power plug and includes a controller, a line detection device and a power on/off control device respectively connected to the controller;

The line detection device is used to collect the electrical information introduced by the power access terminal;

The controller is used to judge and count the electrical information collected by the line detection device, and control the on-off state of the power-on/off control device according to the judgment results, and then control the computer control board of the home appliance and the power access On-off of the terminal.

Preferably, the metering and protection device for household appliances is integrated with the power plug.

Preferably, the electrical information that can be collected by the line detection device is the voltage, current and phase angle between the live wire, the neutral wire and the ground wire;

The controller can judge whether the line has LG reverse connection, overvoltage, overcurrent, overpower or abnormal arc according to the AC information, and if one of the above situations occurs, it will send a power-off command to the power-on and power-off control device;

The controller can also calculate the active power, reactive power and power consumption of the household appliance according to the electrical information.

Preferably, the household appliance metering and protection device further includes a power module, one end of the power module is connected to the power access terminal, and the other end is connected to the controller, for converting the AC power introduced from the power access terminal The controller is supplied with low voltage direct current.

Preferably, the household appliance metering and protection device further includes a wireless communication module connected to the controller for communicating with an external server.

Preferably, the household appliance metering and protection device further includes a serial communication module, one end of the serial communication module is connected to the controller, and the other end is connected to the computer control board of the household appliance.

Preferably, the household appliance metering and protection device further includes a storage module, the storage module is connected to the controller, and is used to save the operating state information of the household appliance metering and protection device and the operating state of the household appliance for a preset period of time. Information, cumulative power consumption, voltage and current curves.

Preferably, the household appliance metering and protection device further includes a manual reset button connected to the controller and used to manually restore the power supply of the household appliance after the power on/off control device is disconnected.

Preferably, the household appliance metering and protection device further includes a display module connected to the controller for indicating the operating status, communication status and metering parameters of the household appliance metering and protection device.

A washing machine, including a home appliance computer control board and a power access terminal, and also has the home appliance metering and protection device described in any one of the above items, and the home appliance metering and protection device is located between the home appliance computer control board and the home appliance computer control board. Between the above power access terminals.

The beneficial technical effect of the technical scheme that the embodiment of the present invention proposes is:

The metering and protection device for household appliances described in the embodiment of the present invention is connected to the power plug, and includes a controller, a line detection device and a power on/off control device connected to the controller respectively; the line detection device is used for It is used to collect the electrical information introduced by the power access terminal; the controller is used to judge and count the electrical information collected by the line detection device, and control the on-off state of the on-off control device according to the judgment result , and then control the on-off of household appliances and power access terminals. Therefore, the device can accurately judge the load characteristics of household appliances, has automatic on-off capability, realizes detection and protection of lines, avoids malfunctions, and has power consumption statistics capabilities.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention For those skilled in the art, other drawings can also be obtained according to the contents of the embodiments of the present invention and these drawings without any creative work.

Fig. 1 is a schematic structural view of a household appliance metering and protection device provided by a method embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a preferred mode of the household appliance metering and protection device provided by the method embodiment of the present invention.

In the picture:

1. Controller; 2. Line detection device; 3. Power on and off control device; 4. Power access terminal; 5. Home appliance computer control panel; 6. Power module; 7. Storage module; 8. Wireless communication module ; 9. Serial communication module; 10. Manual reset button; 11. Display module.

Detailed ways

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of the household appliance metering and protection device provided by the method embodiment of the present invention. As shown in Fig. Power on and off control device 3, one end of the line detection device 2 is connected to the power access terminal 4 of the live wire and the neutral line, and the signal output end of the line detection device 2 is connected to the signal input end 4 of the controller 1; The signal input end of the on-off control device 3 is connected to the controller 1, and the other end of the on-off control device 3 is connected to the home appliance computer control board 5 and other electrical equipment in the home appliance, such as motors.

In this embodiment, as a preference, the metering and protection device for household appliances is integrated with the power plug. Of course, it is not limited to a one-piece structure, and can also be made into a separate structure.

Of course, the connection position of the line detection device 2 and the on-off control device 3 is not limited to the above, and the two can also exchange positions, that is, one end of the on-off control device 3 is connected to the live line and the neutral line. The power access terminal 4 is connected, the other end is connected with the line detection device 2, the signal input end of the power on/off control device 3 is connected with the controller 1; the signal output end of the line detection device 2 is connected with the control The signal input end of the device 1 is connected, and the other end of the line detection device 2 is connected with the computer control board 5 of the home appliance and other electrical equipment in the home appliance, such as a motor.

The controller 1 is a high-performance microprocessor, which is the control center of the device. The controller 1 is used for judging and counting the electrical information collected by the line detection device 2, and controlling the on-off state of the on-off control device 3 according to the judgment results. As a preferred solution, the controller 1 includes a judgment module and a statistics module, the judgment module is used to judge the electrical information collected by the line detection device 2, and the statistics module is used to collect the electrical information collected by the line detection device 2 Statistics of electricity information.

In this embodiment, preferably, the current introduced by the power access terminal 4 is alternating current, and the electrical information collected by the line detection device 2 is also alternating current information.

The line detection device 2 is the detection and measurement unit of the household appliance metering and protection device, and is used to collect the AC information introduced by the power access terminal 4 and transmit the collected results to the controller 1 . Specifically, the line detection device 2 can detect information such as the voltage, current, and phase angle between the voltage and current of the live wire, neutral wire, and ground wire connected to the power access terminal 4, and transmit the detection data to the main controller in real time 1. The judging module of the main controller 1 judges whether unsafe phenomena such as LG reverse connection, overvoltage, overcurrent, overpower or abnormal arc occur on the line according to the internal program algorithm. If any of the above one or When multiple unsafe phenomena occur, immediately send a power-off command to the power-on and power-off control device 3, and disconnect the AC power supply connected to the computer control panel 5 of the home appliance from the power grid to play a role in safety protection. On the other hand, the statistical module of the main controller 1 calculates basic power consumption information such as active power, reactive power and power consumption of household appliances according to the detected AC power information. These statistical information can be used as a reference for the user's subsequent electricity consumption.

The above-mentioned home appliance metering and protection device can accurately judge the load characteristics of home appliances, has automatic on-off capability, realizes detection and protection of lines, avoids malfunctions, and has power consumption statistics capabilities.

Fig. 2 is a schematic structural diagram of a preferred mode of the household appliance metering and protection device provided by the method embodiment of the present invention. As a preferred solution, the household appliance metering and protection device further includes a power supply module 6, one end of the power supply module 6 is connected to the power access terminal 4, and the other end is connected to the controller 1. The alternating current introduced by the input terminal 4 is converted into low-voltage direct current and supplied to the controller 1 .

In this embodiment, as a preferred solution, the home appliance metering and protection device further includes a storage module 7, the storage module 7 is a storage unit of the home appliance metering and protection device, connected to the controller 1, and can store preset The operating state information of the home appliance metering and protection device, the operating state information of the home appliance, the accumulated power consumption, the historical voltage and current curve, etc. of the time period are set.

In this embodiment, as a preferred solution, the household appliance metering and protection device further includes a wireless communication module 8 connected to the controller 1 for communicating with an external server. Specifically, the wireless communication module 8 is a communication interface between the home appliance metering and protection device and remote servers, mobile phones, computers and other clients, such as WiFi, ZigBee and the like. When the network communication is smooth, the home appliance metering and protection device can upload its own operating status information, home appliance operating status information, cumulative power consumption, voltage, current and other data to the server in real time, and can also upload the history stored by the storage module when the network is disconnected. The data is sent back to the server. Users can also view the information through mobile phones, computers and other clients, and can also send control commands to the home appliance metering and protection device and through the home appliance metering and protection device to the home appliance, such as power on, power off, power on, power off, set parameters, etc.

In this embodiment, as a preferred solution, the household appliance metering and protection device further includes a serial port communication module 9, and the serial port communication module 9 is a communication interface between the household appliance metering and protection device and the computer control board 5 of the home appliance. It is connected with the controller 1, and one end is connected with the computer control board 5 of the home appliance through a serial port communication line. The computer control board 5 of the home appliance can feed back the running state of the home appliance to the controller 1 in real time, and can accept control commands issued by the controller 1 at any time. In this embodiment, as a preferred solution, the serial communication line and the live line, neutral line and ground line of the power supply are isolated and packaged as a wire bundle.

In this embodiment, as a preferred solution, the metering and protection device for household appliances further includes a manual reset button 10, which is connected to the controller 1 and is used to switch the power on and off control device 3 Manually restore power to the appliance after disconnection. Specifically, the manual reset button 10 allows the user to manually restore the power supply of the home appliance after the line detection device 2 detects an unsafe phenomenon and cuts off the power; The device restores power to the home appliance.

In this embodiment, as a preferred solution, the home appliance metering and protection device further includes a display module 11, the display module 11 is a display unit of the home appliance metering and protection device, and is connected to the controller 1 for indicating The operating status, communication status and main metering parameters of the home appliance metering and protection devices. The display module 11 is preferably an LED indicator light, a digital tube and the like.

This solution also provides a washing machine, including the computer control board of the home appliance and the power access terminal, and also has the home appliance metering and protection device described in any one of the above items, and the home appliance metering and protection device is connected to the power plug of the home appliance. The integrated structure is located between the computer control board of the home appliance and the power access terminal. The home appliance metering and protection device can accurately judge the load characteristics of home appliances, has automatic on-off capabilities, realizes line detection and protection, avoids misoperation, and has power consumption statistics capabilities.

In this embodiment, the household appliance metering and protection device can also be applied to other household appliances, such as refrigerators, televisions, air conditioners, etc., and is especially suitable for application in multifunctional Internet of Things household appliances. ?

After the IoT home appliance is connected to the server through the home appliance metering and protection device, the home appliance metering and protection device will ask the server for the load characteristics and operating characteristics of the remotely stored home appliance from the server according to the specific model of the home appliance, and intelligently adjust the parameters of the protection program algorithm, greatly reducing protection. Probability of device malfunction. The home appliance metering and protection device monitors the operating status of the home appliance while detecting the voltage and current information of the power line, and further accurately judges the cause of the unsafe phenomenon of the home appliance to prevent misoperation. Electricity metering is associated with the operating status of home appliances, and more detailed statistical information on electricity consumption can be obtained. For example, washing machines can accurately count the power consumption of washing, rinsing, and drying, etc.; air conditioners can accurately count the power consumption of cooling , heating power consumption and dehumidification power consumption, etc.

The above metering and protection devices applied to multi-functional Internet of Things home appliances are integrated with the power plug of the home appliance and will not be lost. The metering and protection device is interconnected with the home appliance through the reserved serial port communication module, realizing the integration of functions such as power protection, electricity metering and remote control of the Internet of Things. The algorithm parameters of the power protection program are intelligently adjusted according to the home appliance information obtained from the server, and the operating status of the home appliances is monitored while detecting the power state, so that the control of the power protection module is more accurate and the occurrence of malfunctions is eliminated. The use of the above electrical metering and protection devices greatly improves the safety, convenience and comfort of users operating household appliances.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (10)

1. A metering and protection device for household appliances, characterized in that it is connected to a power plug and includes a controller (1) and a line detection device (2) and a power-on/off control device (3) connected to the controller (1) respectively ); The line detection device (2) is used to collect electrical information introduced by the power access terminal (4); The controller (1) is used to respectively judge and count the electrical information collected by the line detection device (2), and control the on-off state of the power-on/off control device (3) according to the judgment result, and then control On-off of household appliances and power access terminal (4). 2. The household appliance metering and protection device according to claim 1, characterized in that, the household appliance metering and protection device is integrated with the power plug. 3. The household appliance metering and protection device according to claim 2, characterized in that, The electrical information that can be collected by the line detection device (2) is the voltage, current and phase angle of the voltage and current of the live wire, the neutral wire and the ground wire; The controller (1) can judge whether there is LG reverse connection, over-voltage, over-current, over-power or abnormal arc in the line according to the electrical information, and if one of the above-mentioned situations occurs, it will send the power-on/off control device (3) Issue a power-off command; The controller (1) can also calculate the active power, reactive power and power consumption of the household appliances according to the electrical information. 4. The household appliance metering and protection device according to claim 3, further comprising a power supply module (6), one end of the power supply module (6) is connected to the power access terminal (4), and the other end is connected to the The controller (1) is used to convert the alternating current introduced from the power access terminal (4) into low-voltage direct current and supply it to the controller (1). 5. The household appliance metering and protection device according to claim 4, further comprising a wireless communication module (8), the wireless communication module (8) being connected to the controller (1) for communicating with external Server communication. 6. The household appliance metering and protection device according to claim 5, further comprising a serial communication module (9), one end of the serial communication module (9) is connected to the controller (1), and the other end is connected to the household appliance The local computer control board (5) is connected. 7. The household appliance metering and protection device according to claim 6, further comprising a storage module (7), the storage module (7) being connected to the controller (1) for saving the preset time The operating state information of the home appliance metering and protection device, the operating state information of the home appliance, the accumulated power consumption, and the voltage and current curve of the section. 8. The household appliance metering and protection device according to claim 7, further comprising a manual reset button (10), the manual reset button (10) being connected to the controller (1) for After the on-off control device (3) is disconnected, the power supply of the household appliances is manually restored. 9. The household appliance metering and protection device according to claim 8, further comprising a display module (11), the display module (11) being connected to the controller (1) for indicating the The running status, communication status and metering parameters of metering and protection devices. 10. A washing machine, comprising a home appliance computer control board (5) and a power access terminal (4), characterized in that it also has the home appliance metering and protection device according to any one of claims 1 to 9, said The home appliance metering and protection device is located between the home appliance computer control panel (5) and the power access terminal (4).